508 lines
14 KiB
C
508 lines
14 KiB
C
/* linux/arch/arm/mach-s3c2410/mach-bast.c
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*
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* Copyright (c) 2003-2005 Simtec Electronics
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* Ben Dooks <ben@simtec.co.uk>
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*
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* http://www.simtec.co.uk/products/EB2410ITX/
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Modifications:
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* 14-Sep-2004 BJD USB power control
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* 20-Aug-2004 BJD Added s3c2410_board struct
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* 18-Aug-2004 BJD Added platform devices from default set
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* 16-May-2003 BJD Created initial version
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* 16-Aug-2003 BJD Fixed header files and copyright, added URL
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* 05-Sep-2003 BJD Moved to v2.6 kernel
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* 06-Jan-2003 BJD Updates for <arch/map.h>
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* 18-Jan-2003 BJD Added serial port configuration
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* 05-Oct-2004 BJD Power management code
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* 04-Nov-2004 BJD Updated serial port clocks
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* 04-Jan-2005 BJD New uart init call
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* 10-Jan-2005 BJD Removed include of s3c2410.h
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* 14-Jan-2005 BJD Add support for muitlple NAND devices
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* 03-Mar-2005 BJD Ensured that bast-cpld.h is included
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* 10-Mar-2005 LCVR Changed S3C2410_VA to S3C24XX_VA
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* 14-Mar-2005 BJD Updated for __iomem changes
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* 22-Jun-2005 BJD Added DM9000 platform information
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* 28-Jun-2005 BJD Moved pm functionality out to common code
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* 17-Jul-2005 BJD Changed to platform device for SuperIO 16550s
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* 25-Jul-2005 BJD Removed ASIX static mappings
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* 27-Jul-2005 BJD Ensure maximum frequency of i2c bus
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* 20-Sep-2005 BJD Added static to non-exported items
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* 26-Oct-2005 BJD Added FB platform data
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*/
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <linux/list.h>
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#include <linux/timer.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/dm9000.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <asm/mach/irq.h>
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#include <asm/arch/bast-map.h>
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#include <asm/arch/bast-irq.h>
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#include <asm/arch/bast-cpld.h>
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#include <asm/hardware.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <asm/mach-types.h>
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//#include <asm/debug-ll.h>
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#include <asm/arch/regs-serial.h>
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#include <asm/arch/regs-gpio.h>
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#include <asm/arch/regs-mem.h>
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#include <asm/arch/regs-lcd.h>
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#include <asm/arch/nand.h>
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#include <asm/arch/iic.h>
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#include <asm/arch/fb.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/nand.h>
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#include <linux/mtd/nand_ecc.h>
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#include <linux/mtd/partitions.h>
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#include <linux/serial_8250.h>
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#include "clock.h"
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#include "devs.h"
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#include "cpu.h"
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#include "usb-simtec.h"
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#define COPYRIGHT ", (c) 2004-2005 Simtec Electronics"
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/* macros for virtual address mods for the io space entries */
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#define VA_C5(item) ((unsigned long)(item) + BAST_VAM_CS5)
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#define VA_C4(item) ((unsigned long)(item) + BAST_VAM_CS4)
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#define VA_C3(item) ((unsigned long)(item) + BAST_VAM_CS3)
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#define VA_C2(item) ((unsigned long)(item) + BAST_VAM_CS2)
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/* macros to modify the physical addresses for io space */
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#define PA_CS2(item) ((item) + S3C2410_CS2)
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#define PA_CS3(item) ((item) + S3C2410_CS3)
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#define PA_CS4(item) ((item) + S3C2410_CS4)
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#define PA_CS5(item) ((item) + S3C2410_CS5)
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static struct map_desc bast_iodesc[] __initdata = {
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/* ISA IO areas */
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{ (u32)S3C24XX_VA_ISA_BYTE, PA_CS2(BAST_PA_ISAIO), SZ_16M, MT_DEVICE },
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{ (u32)S3C24XX_VA_ISA_WORD, PA_CS3(BAST_PA_ISAIO), SZ_16M, MT_DEVICE },
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/* we could possibly compress the next set down into a set of smaller tables
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* pagetables, but that would mean using an L2 section, and it still means
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* we cannot actually feed the same register to an LDR due to 16K spacing
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*/
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/* bast CPLD control registers, and external interrupt controls */
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{ (u32)BAST_VA_CTRL1, BAST_PA_CTRL1, SZ_1M, MT_DEVICE },
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{ (u32)BAST_VA_CTRL2, BAST_PA_CTRL2, SZ_1M, MT_DEVICE },
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{ (u32)BAST_VA_CTRL3, BAST_PA_CTRL3, SZ_1M, MT_DEVICE },
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{ (u32)BAST_VA_CTRL4, BAST_PA_CTRL4, SZ_1M, MT_DEVICE },
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/* PC104 IRQ mux */
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{ (u32)BAST_VA_PC104_IRQREQ, BAST_PA_PC104_IRQREQ, SZ_1M, MT_DEVICE },
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{ (u32)BAST_VA_PC104_IRQRAW, BAST_PA_PC104_IRQRAW, SZ_1M, MT_DEVICE },
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{ (u32)BAST_VA_PC104_IRQMASK, BAST_PA_PC104_IRQMASK, SZ_1M, MT_DEVICE },
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/* peripheral space... one for each of fast/slow/byte/16bit */
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/* note, ide is only decoded in word space, even though some registers
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* are only 8bit */
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/* slow, byte */
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{ VA_C2(BAST_VA_ISAIO), PA_CS2(BAST_PA_ISAIO), SZ_16M, MT_DEVICE },
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{ VA_C2(BAST_VA_ISAMEM), PA_CS2(BAST_PA_ISAMEM), SZ_16M, MT_DEVICE },
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{ VA_C2(BAST_VA_SUPERIO), PA_CS2(BAST_PA_SUPERIO), SZ_1M, MT_DEVICE },
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{ VA_C2(BAST_VA_IDEPRI), PA_CS3(BAST_PA_IDEPRI), SZ_1M, MT_DEVICE },
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{ VA_C2(BAST_VA_IDESEC), PA_CS3(BAST_PA_IDESEC), SZ_1M, MT_DEVICE },
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{ VA_C2(BAST_VA_IDEPRIAUX), PA_CS3(BAST_PA_IDEPRIAUX), SZ_1M, MT_DEVICE },
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{ VA_C2(BAST_VA_IDESECAUX), PA_CS3(BAST_PA_IDESECAUX), SZ_1M, MT_DEVICE },
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/* slow, word */
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{ VA_C3(BAST_VA_ISAIO), PA_CS3(BAST_PA_ISAIO), SZ_16M, MT_DEVICE },
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{ VA_C3(BAST_VA_ISAMEM), PA_CS3(BAST_PA_ISAMEM), SZ_16M, MT_DEVICE },
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{ VA_C3(BAST_VA_SUPERIO), PA_CS3(BAST_PA_SUPERIO), SZ_1M, MT_DEVICE },
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{ VA_C3(BAST_VA_IDEPRI), PA_CS3(BAST_PA_IDEPRI), SZ_1M, MT_DEVICE },
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{ VA_C3(BAST_VA_IDESEC), PA_CS3(BAST_PA_IDESEC), SZ_1M, MT_DEVICE },
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{ VA_C3(BAST_VA_IDEPRIAUX), PA_CS3(BAST_PA_IDEPRIAUX), SZ_1M, MT_DEVICE },
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{ VA_C3(BAST_VA_IDESECAUX), PA_CS3(BAST_PA_IDESECAUX), SZ_1M, MT_DEVICE },
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/* fast, byte */
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{ VA_C4(BAST_VA_ISAIO), PA_CS4(BAST_PA_ISAIO), SZ_16M, MT_DEVICE },
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{ VA_C4(BAST_VA_ISAMEM), PA_CS4(BAST_PA_ISAMEM), SZ_16M, MT_DEVICE },
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{ VA_C4(BAST_VA_SUPERIO), PA_CS4(BAST_PA_SUPERIO), SZ_1M, MT_DEVICE },
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{ VA_C4(BAST_VA_IDEPRI), PA_CS5(BAST_PA_IDEPRI), SZ_1M, MT_DEVICE },
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{ VA_C4(BAST_VA_IDESEC), PA_CS5(BAST_PA_IDESEC), SZ_1M, MT_DEVICE },
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{ VA_C4(BAST_VA_IDEPRIAUX), PA_CS5(BAST_PA_IDEPRIAUX), SZ_1M, MT_DEVICE },
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{ VA_C4(BAST_VA_IDESECAUX), PA_CS5(BAST_PA_IDESECAUX), SZ_1M, MT_DEVICE },
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/* fast, word */
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{ VA_C5(BAST_VA_ISAIO), PA_CS5(BAST_PA_ISAIO), SZ_16M, MT_DEVICE },
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{ VA_C5(BAST_VA_ISAMEM), PA_CS5(BAST_PA_ISAMEM), SZ_16M, MT_DEVICE },
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{ VA_C5(BAST_VA_SUPERIO), PA_CS5(BAST_PA_SUPERIO), SZ_1M, MT_DEVICE },
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{ VA_C5(BAST_VA_IDEPRI), PA_CS5(BAST_PA_IDEPRI), SZ_1M, MT_DEVICE },
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{ VA_C5(BAST_VA_IDESEC), PA_CS5(BAST_PA_IDESEC), SZ_1M, MT_DEVICE },
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{ VA_C5(BAST_VA_IDEPRIAUX), PA_CS5(BAST_PA_IDEPRIAUX), SZ_1M, MT_DEVICE },
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{ VA_C5(BAST_VA_IDESECAUX), PA_CS5(BAST_PA_IDESECAUX), SZ_1M, MT_DEVICE },
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};
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#define UCON S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK
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#define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
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#define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
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static struct s3c24xx_uart_clksrc bast_serial_clocks[] = {
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[0] = {
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.name = "uclk",
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.divisor = 1,
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.min_baud = 0,
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.max_baud = 0,
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},
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[1] = {
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.name = "pclk",
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.divisor = 1,
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.min_baud = 0,
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.max_baud = 0.
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}
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};
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static struct s3c2410_uartcfg bast_uartcfgs[] = {
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[0] = {
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.hwport = 0,
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.flags = 0,
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.ucon = UCON,
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.ulcon = ULCON,
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.ufcon = UFCON,
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.clocks = bast_serial_clocks,
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.clocks_size = ARRAY_SIZE(bast_serial_clocks)
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},
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[1] = {
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.hwport = 1,
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.flags = 0,
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.ucon = UCON,
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.ulcon = ULCON,
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.ufcon = UFCON,
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.clocks = bast_serial_clocks,
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.clocks_size = ARRAY_SIZE(bast_serial_clocks)
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},
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/* port 2 is not actually used */
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[2] = {
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.hwport = 2,
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.flags = 0,
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.ucon = UCON,
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.ulcon = ULCON,
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.ufcon = UFCON,
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.clocks = bast_serial_clocks,
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.clocks_size = ARRAY_SIZE(bast_serial_clocks)
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}
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};
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/* NOR Flash on BAST board */
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static struct resource bast_nor_resource[] = {
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[0] = {
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.start = S3C2410_CS1 + 0x4000000,
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.end = S3C2410_CS1 + 0x4000000 + (32*1024*1024) - 1,
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.flags = IORESOURCE_MEM,
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}
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};
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static struct platform_device bast_device_nor = {
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.name = "bast-nor",
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.id = -1,
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.num_resources = ARRAY_SIZE(bast_nor_resource),
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.resource = bast_nor_resource,
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};
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/* NAND Flash on BAST board */
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static int smartmedia_map[] = { 0 };
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static int chip0_map[] = { 1 };
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static int chip1_map[] = { 2 };
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static int chip2_map[] = { 3 };
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static struct mtd_partition bast_default_nand_part[] = {
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[0] = {
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.name = "Boot Agent",
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.size = SZ_16K,
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.offset = 0
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},
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[1] = {
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.name = "/boot",
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.size = SZ_4M - SZ_16K,
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.offset = SZ_16K,
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},
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[2] = {
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.name = "user",
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.offset = SZ_4M,
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.size = MTDPART_SIZ_FULL,
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}
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};
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/* the bast has 4 selectable slots for nand-flash, the three
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* on-board chip areas, as well as the external SmartMedia
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* slot.
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*
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* Note, there is no current hot-plug support for the SmartMedia
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* socket.
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*/
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static struct s3c2410_nand_set bast_nand_sets[] = {
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[0] = {
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.name = "SmartMedia",
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.nr_chips = 1,
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.nr_map = smartmedia_map,
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.nr_partitions = ARRAY_SIZE(bast_default_nand_part),
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.partitions = bast_default_nand_part
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},
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[1] = {
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.name = "chip0",
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.nr_chips = 1,
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.nr_map = chip0_map,
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.nr_partitions = ARRAY_SIZE(bast_default_nand_part),
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.partitions = bast_default_nand_part
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},
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[2] = {
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.name = "chip1",
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.nr_chips = 1,
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.nr_map = chip1_map,
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.nr_partitions = ARRAY_SIZE(bast_default_nand_part),
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.partitions = bast_default_nand_part
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},
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[3] = {
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.name = "chip2",
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.nr_chips = 1,
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.nr_map = chip2_map,
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.nr_partitions = ARRAY_SIZE(bast_default_nand_part),
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.partitions = bast_default_nand_part
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}
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};
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static void bast_nand_select(struct s3c2410_nand_set *set, int slot)
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{
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unsigned int tmp;
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slot = set->nr_map[slot] & 3;
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pr_debug("bast_nand: selecting slot %d (set %p,%p)\n",
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slot, set, set->nr_map);
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tmp = __raw_readb(BAST_VA_CTRL2);
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tmp &= BAST_CPLD_CTLR2_IDERST;
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tmp |= slot;
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tmp |= BAST_CPLD_CTRL2_WNAND;
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pr_debug("bast_nand: ctrl2 now %02x\n", tmp);
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__raw_writeb(tmp, BAST_VA_CTRL2);
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}
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static struct s3c2410_platform_nand bast_nand_info = {
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.tacls = 30,
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.twrph0 = 60,
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.twrph1 = 60,
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.nr_sets = ARRAY_SIZE(bast_nand_sets),
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.sets = bast_nand_sets,
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.select_chip = bast_nand_select,
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};
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/* DM9000 */
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static struct resource bast_dm9k_resource[] = {
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[0] = {
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.start = S3C2410_CS5 + BAST_PA_DM9000,
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.end = S3C2410_CS5 + BAST_PA_DM9000 + 3,
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.flags = IORESOURCE_MEM
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},
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[1] = {
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.start = S3C2410_CS5 + BAST_PA_DM9000 + 0x40,
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.end = S3C2410_CS5 + BAST_PA_DM9000 + 0x40 + 0x3f,
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.flags = IORESOURCE_MEM
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},
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[2] = {
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.start = IRQ_DM9000,
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.end = IRQ_DM9000,
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.flags = IORESOURCE_IRQ
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}
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};
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/* for the moment we limit ourselves to 16bit IO until some
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* better IO routines can be written and tested
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*/
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static struct dm9000_plat_data bast_dm9k_platdata = {
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.flags = DM9000_PLATF_16BITONLY
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};
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static struct platform_device bast_device_dm9k = {
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.name = "dm9000",
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.id = 0,
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.num_resources = ARRAY_SIZE(bast_dm9k_resource),
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.resource = bast_dm9k_resource,
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.dev = {
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.platform_data = &bast_dm9k_platdata,
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}
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};
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/* serial devices */
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#define SERIAL_BASE (S3C2410_CS2 + BAST_PA_SUPERIO)
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#define SERIAL_FLAGS (UPF_BOOT_AUTOCONF | UPF_IOREMAP | UPF_SHARE_IRQ)
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#define SERIAL_CLK (1843200)
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static struct plat_serial8250_port bast_sio_data[] = {
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[0] = {
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.mapbase = SERIAL_BASE + 0x2f8,
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.irq = IRQ_PCSERIAL1,
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.flags = SERIAL_FLAGS,
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.iotype = UPIO_MEM,
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.regshift = 0,
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.uartclk = SERIAL_CLK,
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},
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[1] = {
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.mapbase = SERIAL_BASE + 0x3f8,
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.irq = IRQ_PCSERIAL2,
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.flags = SERIAL_FLAGS,
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.iotype = UPIO_MEM,
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.regshift = 0,
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.uartclk = SERIAL_CLK,
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},
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{ }
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};
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static struct platform_device bast_sio = {
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.name = "serial8250",
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.id = PLAT8250_DEV_PLATFORM,
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.dev = {
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.platform_data = &bast_sio_data,
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},
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};
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/* we have devices on the bus which cannot work much over the
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* standard 100KHz i2c bus frequency
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*/
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static struct s3c2410_platform_i2c bast_i2c_info = {
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.flags = 0,
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.slave_addr = 0x10,
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.bus_freq = 100*1000,
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.max_freq = 130*1000,
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};
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static struct s3c2410fb_mach_info __initdata bast_lcd_info = {
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.width = 640,
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.height = 480,
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.xres = {
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.min = 320,
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.max = 1024,
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.defval = 640,
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},
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.yres = {
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.min = 240,
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.max = 600,
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.defval = 480,
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},
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.bpp = {
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.min = 4,
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.max = 16,
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.defval = 8,
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},
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.regs = {
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.lcdcon1 = 0x00000176,
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.lcdcon2 = 0x1d77c7c2,
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.lcdcon3 = 0x013a7f13,
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.lcdcon4 = 0x00000057,
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.lcdcon5 = 0x00014b02,
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}
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};
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/* Standard BAST devices */
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static struct platform_device *bast_devices[] __initdata = {
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&s3c_device_usb,
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&s3c_device_lcd,
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&s3c_device_wdt,
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&s3c_device_i2c,
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&s3c_device_iis,
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&s3c_device_rtc,
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&s3c_device_nand,
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&bast_device_nor,
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&bast_device_dm9k,
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&bast_sio,
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};
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static struct clk *bast_clocks[] = {
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&s3c24xx_dclk0,
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&s3c24xx_dclk1,
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&s3c24xx_clkout0,
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&s3c24xx_clkout1,
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&s3c24xx_uclk,
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};
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static struct s3c24xx_board bast_board __initdata = {
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.devices = bast_devices,
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.devices_count = ARRAY_SIZE(bast_devices),
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.clocks = bast_clocks,
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.clocks_count = ARRAY_SIZE(bast_clocks)
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};
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static void __init bast_map_io(void)
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{
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/* initialise the clocks */
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s3c24xx_dclk0.parent = NULL;
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s3c24xx_dclk0.rate = 12*1000*1000;
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s3c24xx_dclk1.parent = NULL;
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s3c24xx_dclk1.rate = 24*1000*1000;
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s3c24xx_clkout0.parent = &s3c24xx_dclk0;
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s3c24xx_clkout1.parent = &s3c24xx_dclk1;
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s3c24xx_uclk.parent = &s3c24xx_clkout1;
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s3c_device_nand.dev.platform_data = &bast_nand_info;
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s3c_device_i2c.dev.platform_data = &bast_i2c_info;
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s3c24xx_init_io(bast_iodesc, ARRAY_SIZE(bast_iodesc));
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s3c24xx_init_clocks(0);
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s3c24xx_init_uarts(bast_uartcfgs, ARRAY_SIZE(bast_uartcfgs));
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s3c24xx_set_board(&bast_board);
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usb_simtec_init();
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}
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static void __init bast_init(void)
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{
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s3c24xx_fb_set_platdata(&bast_lcd_info);
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}
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MACHINE_START(BAST, "Simtec-BAST")
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/* Maintainer: Ben Dooks <ben@simtec.co.uk> */
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.phys_ram = S3C2410_SDRAM_PA,
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.phys_io = S3C2410_PA_UART,
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.io_pg_offst = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
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.boot_params = S3C2410_SDRAM_PA + 0x100,
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.map_io = bast_map_io,
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.init_irq = s3c24xx_init_irq,
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.init_machine = bast_init,
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.timer = &s3c24xx_timer,
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MACHINE_END
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